Fresh Water Distribution

Why do we need to conserve water?

• It is an unlimited resource. 

• It is a limited resource. 

• There is a lot of water. 

• There is no need to conserve water.

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NGSS.MS-ESS2-4

NGSS.MS-ESS3-4

This graphic shows the largest fresh and salt water sources on Earth. Which of these sources BEST completes the graphic?

• snow

• clouds

• groundwater

• swimming pools

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NGSS.MS-ESS2-4

This pie chart displays the makeup of Earth's water. Which sentence is true about Earth's water, based on the data in the pie chart?

• Over 30% of fresh water humans use comes from lakes and rivers

• Humans use a much greater percentage of salt water than fresh water

• Fresh water makes up 2.5% of the water on Earth so it should be conserved

• Most of Earth's total water is frozen in ice glaciers, which are made of salt water

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NGSS.MS-ESS2-4

Less than 3% of the Earth's water supply is fresh water. Only about 0.3% of this supply is surface water, found in rivers, lakes, and swamps. This pie chart shows how this small percentage of surface water is distributed. Based on the data shown, which statement is true?

• The majority of Earth's rivers and swamps are found in North America and Africa

• The North American Great Lakes is Earth's third-largest fresh surface water source

• The North American Great Lakes and Lake Baikal hold 50% of Earth's fresh surface water

• The amount of fresh surface water in swamps and rivers is equal to that of Lake Baikal

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NGSS.MS-ESS2-4

Fresh water is water that is not salty. The graph below shows three ways fresh water is found on Earth: as ice, as groundwater, and as water above ground.

• Asia

• Africa

• Australia

• Antarctica

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NGSS.MS-ESS2-4

NGSS.MS-ESS2-1

The chart shows the distribution of fresh water on Earth. Most of the fresh water on Earth is

• highly polluted

• in the frozen state

• used for agriculture

• purified for drinking

Approximately 30% of the Earth’s freshwater is stored in –

• lakes

• streams

• groundwater

• living things

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NGSS.MS-ESS2-4

NGSS.MS-ESS2-1

Of all of the freshwater on Earth, most of it is found in –

• lakes

• streams

• wetlands

• glaciers

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NGSS.MS-ESS2-4

What percentage of the Earth's water is fresh water?

• 2.5%

• 10%

• 25%

• 50%

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NGSS.MS-ESS2-4

Which of the following is the largest source of fresh water on Earth?

• Rivers

• Lakes

• Glaciers and ice caps

• Groundwater

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NGSS.MS-ESS2-4